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Subject[PATCH] Text Edit Lock - i386 kerneldoc implementation
Text Edit Lock - i386 kerneldoc implementation

Add kerneldoc to text edit lock i386 API.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
CC: hch@infradead.org
---
arch/i386/mm/init.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)

Index: linux-2.6-lttng/arch/i386/mm/init.c
===================================================================
--- linux-2.6-lttng.orig/arch/i386/mm/init.c 2007-07-15 18:59:31.000000000 -0400
+++ linux-2.6-lttng/arch/i386/mm/init.c 2007-07-15 19:00:05.000000000 -0400
@@ -826,9 +826,13 @@ void mark_rodata_ro(void)
global_flush_tlb();
}

-/*
- * Lock the kernel text for mutual write exclusion.
- * Make sure the pages are writable.
+/**
+ * kernel_text_mark_rw - Mark kernel text RW
+ * @address: location of the code
+ * @len: size of code to mark
+ *
+ * Mark the kernel text pages writable so they can safely written to. This is
+ * useful for code patching.
*/
void __kprobes kernel_text_mark_rw(unsigned long address, size_t len)
{
@@ -846,6 +850,13 @@ void __kprobes kernel_text_mark_rw(unsig
}
EXPORT_SYMBOL_GPL(kernel_text_mark_rw);

+/**
+ * kernel_text_unmark - Mark kernel text back to its original flags
+ * @address: location of the code
+ * @len: size of code to mark
+ *
+ * Mark the kernel text back to its original flags.
+ */
void __kprobes kernel_text_unmark(unsigned long address, size_t len)
{
if (kernel_text_is_ro && address >= PFN_ALIGN(_text)
--
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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